Volcanoes And Igneous Rocks

What two gases are the most abundant gases emitted during basaltic volcanism?

Which one of the following statements concerning volcanic blocks and bombs is true?

__________ destroyed the city of St. Pierre, Martinique in 1902.

In 1980, __________ was the first Cascade Range volcano to erupt since Mt. Lassen, California, in 1915-16.

What fate befell the "Lost City of Atlantis" mentioned in Plato's writings?

Which volcanoes are sometimes very large, with a gently sloping mound composed mainly of lava flows?

Which type of basaltic lava flow has its surface covered with sharp-edged, angular blocks and rubble?

What type of volcanoes are Kilauea and Mauna Loa in Hawaii?

Which kind of volcanism is typical of mid-oceanic ridge systems?

Which one of the following shows the correct order from left to right of decreasing magmatic viscosity?

Which region has the greatest concentration of currently active volcanoes?

What volcanic events formed Crater Lake, Oregon? When did they take place?

Which ocean basin is rimmed by the most subduction zones?

What is the most common volatile constituent in both magmas and volcanic gases?

Which of the following statements best describes the Hawaiian volcanoes?

Which one of the following statements concerning cinder cones is false?

What type of magma typically comprises stratovolcanoes?

Which type of basaltic lava flow has a fairly smooth, unfragmented, ropy surface?

To what is the geologically recent volcanic activity in Yellowstone National Park usually attributed?

What is the largest known volcano in the solar system?

What type of magma is the most abundant at oceanic-spreading centers?

Which one of the following best describes volcanism of the Cascade Range in the northwestern United States?

How do volcanic bombs originate?

What shape is Mt. St. Helens?

Why would a plume of solid silicate rock rising slowly from deep in the mantle begin melting as it neared the base of the lithosphere?